1969 Torino

[carbuff]

Does this discussion mean that I'm gonna stop hearing about putting 335's on the back of my car?!

[FETorino]

Originally Posted by carbuff

Does this discussion mean that I'm gonna stop hearing about putting 335's on the back of my car?!

No You chose smaller out of fear not out of engineering concerns. That doesn't count

[Ron Sutton]

Originally Posted by Matt.A

Hey Ron, another question for you...

You mentioned that in Gaetano's case he might as well have just thrown 275 tires on the back of the car instead of the 315s because he would need to remove the 15.x percent more grip that the 315s added in order to get the car balanced again.

My question is, if you're working with more tire in the back versus the front, can you tune the rear to have more grip in the straights and less under steady state cornering?

When you discussed the pros and cons of high roll/low pitch versus high roll/low pitch, I was curious if you could run one setup on the front and the other on the rear. I feel like there is a reason you haven't mentioned doing this, but if you have the time, it would be cool if you could explain what would happen from running low roll/high pitch in the front and high roll/low pitch in the back.

Thanks for all the time you've spent sharing knowledge with us amateur hour club guys

Matt

Hey Matt, I enjoy helping.

I'm outta here for a week, so I'll discuss that when I get back.

Everyone take care.

[Flash68]

Ron, thank you getting this thread out of the toilet and back into some really good discussion. I might need to "rent" you to come fix my disaster of a build thread....

As others have said, I enjoy and appreciate the wealth of info you're sharing.

[Wissing72]

Wow Rob, I go away for a couple of weeks and the car has come together quite a lot! Looks good.
The tire/wheel info was way too much for this early in the morning but glad it is there to re-read. Thanks.

[FETorino]

Originally Posted by Flash68

Ron, thank you getting this thread out of the toilet and back into some really good discussion. I might need to "rent" you to come fix my disaster of a build thread....

As others have said, I enjoy and appreciate the wealth of info you're sharing.

Flash I think you've done more to accomplish that than anyone by staying off the thread recently.

Originally Posted by gmtech921

Wow Rob, I go away for a couple of weeks and the car has come together quite a lot! Looks good.
The tire/wheel info was way too much for this early in the morning but glad it is there to re-read. Thanks.

Thanks I'm making progress and have some more things in the works that I'll be posting on in a few weeks.

Originally Posted by Ron Sutton

On track width (center of tread to center of tread for any readers not familiar) … the optimum F/R TW split falls somewhere in the window of -1” to +1” depending on the cars weight distribution & suspension travel strategy. When a car has significantly more front weight distribution … say 53-56% … the front naturally wants to roll more than the rear. Having the front track width a little wider helps balance the car’s roll angle. I don’t like to have the front TW more than 1” wider than the rear, on the roll angle balance goes the other direction & the car wants to roll over on the outside rear tire too much.

With the much wider rear tires moving the rear TW "in" ... I suspect your rear track width is substantially narrower than your front & will contribute to things that cause a push condition. You should measure both front & rear track widths & post the info. If the rear is more than 1” narrower than the front … and if you care about this … then you would want to narrow the FTW, or widen the RTW or a balance of both.

In case this is new to anyone, Wider front TW than rear = tightens the car … too much makes it push. Wider rear TW than front = frees the car … too much makes it loose. If the car has more rear weight, I may, or may not, run the rear wider than the front. It does depend on if the suspension travel strategy is “high roll/low pitch” or “low roll/high pitch”.

Ron flew the coop for a week so until he gets back I'm taking a break from the tire/handling discussion. I have some more info on track width and such to throw out there for discussion.

I did take track width into consideration when choosing the tire wheel package. My front comes in at 55.25" and the rear at 58" Ron was surprised by this since it is intuitive to think tubbing in the rear would push the track width in significantly. I had to remind him what you all know. My car has a big but. So more tire to the inside of the fender would have widened the gap in front to rear track. Currently I have 1.75" more TW in the rear which should help free the back end up some even with the 345s.

I don't think I ever see anyone post about it. What is the typical TW measurement on a first gen Camaro?

[intocarss]

HEY FT... Is it done yet??? Am I drunk, what's with the pink elephant????

Maybe we all should stay out of BMF's thread so he can finish

Thanks for the write up Mr Ron

[FETorino]

Originally Posted by intocarss

HEY FT... Is it done yet???

You know better than to ask that question.

Originally Posted by intocarss

Am I drunk, what's with the pink elephant????

I don't know what you are talking about.

Originally Posted by intocarss

Maybe we all should stay out of BMF's thread so he can finish

Doesn't matter. He can multi task. He is quite capable of doing nothing on the car and posting simultaneously.

Originally Posted by intocarss

Thanks for the write up Mr Ron

Can't wait till he gets back and the fun continues.

[Flash68]

Originally Posted by FETorino

Flash I think you've done more to accomplish that than anyone by staying off the thread recently.

That's giving me an awful lot of credit.

Originally Posted by FETorino

I don't think I ever see anyone post about it. What is the typical TW measurement on a first gen Camaro?

Good question ... I would guess pretty close to yours.

Originally Posted by carbuff

Does this discussion mean that I'm gonna stop hearing about putting 335's on the back of my car?!

Only if you put 315's on the front.

[tubbed69]

wheels are very nice Rob